Combined throttle and governor device



` A. c. HooF COMBINED THROTTLE AND GOVERNOR DEVICE May 28, 1940.

. Filed Nov 8,1938 s sheets-sheet 1 INVENTOR. ora /oaf W ATTORNEY.

May 28 1940 A. c. HooF* COMBINED THRU-TTLE AND GOVERNOR DEVIUE Filed Nov. 8, 1938 3 Sheets-Sheet 2v iff-45 /a 55 I ATTORNEY.

. May 28, 1940. A. c.I HooF COMBINED THROTTLE ND GOVERNOR DEVICE.

Filed Nov. e, 1938 5 sheets-sheet s l .5: I1 i l?? i; i /6 'I' zo 22 l fz ff I /5 INVENTOR BY l . ATTORNEY.

Patented May 28, 1940 UNITED STATES- PATENT ol-FICE .l

COMEJNEDk THROTTLE ANnGovERNoii DEv1oE y l Addison (hHoof, Hinsdalalll. D Application November' s, 193s, serial N'o. `29g514 eolaims. "(01. "rs1-'1152)v My invention relates to improvements inv a. combined throttle and governor device.- My invention relates Vmore particularly to devices of the character described which include the 5;; carbureter throttle valve and a governor valve of the type adapted to be actuatedby the suction in the intake manifold engines.

yWherever governors Aare used with carbureters V today in governing the speed of the-internal com# bustion engine upon which the same are mounted,

one lof the principal Aobjections to the use thereof is the fact that cheating may be accomplishedl by an operator who has learned how to-cheat. As is well known in the art, when thev governor valve is in control of the'low of gases 'to the internal combustion engine, lthe throttle valve is transferred from `a, point adjacent the throttle valve, and where a governor is used in connection with the same, thatl the vacuum isftransrferred'to a point adjacent vthe governor'valve under all conditions where 'the governor valvefis in a more nearly closed position than the'throttle valve. However, where av throttle valve land 'a governor valveare used, and particularly where the load is comparatively light, the governor valve will be moved to its speed limiting "closed position and the throttle valve may be manipulated manually to approach the same degree of closing as thegovernor` valve. doneI in a careful manner by a driver and the throttle valve is gradually manipulated to the .j exact point where the throttle valve is approxi g5' mately at a position where the opening is equivalent to the governed speed ofthe vehicle, ther condition of suction or vacuum changes, vmoving past the governor valve to a point adjacent the throttle valve. This causes the resistance means acting on the governor valve 'tof cause the same to move to an open position and whenl the throttle valve is gradually moved to a more open position, the vehicle can of course be operated at greater than the governed speed, resulting in .45 what is termed cheating, or in other words,

over-speeding the set speed of the governor.

. As a matter of illustration, if a predetermined speed of M. P..H. is the setting of the governor', and opening of the valvev is approximately 10?,

with one-eighth of a ful load, to permit this speedthe spr-ing resistance means for resisting the closure of the governor valve. permits a 10 opening. If thethrottle valve is now moved to the same opening or a trifle smaller` opening than the governorbvalve, itcreates a partial vacuum abovel of internal combustion usually wide open and the'vacuum or suctionfis Where this is valve is 'not capable 4of drawings, upon which f the. governor valve .equivalent to approximately 2/3 `the 'vacuum` below the governor valve.r v

This 'condition has been recognized. for many years yin themanufacture vof vacuum and velocity p' Y type ,-governors and by some manufacturers a 5g' partial correctionhas been made by .inserting a dashpot or piston and plunger in a. separate opening tothe atmosphere andattached to thevalve y `of'"th'efgovernor. piston is; placed between the governor valve and rthe throttlev valve so 10:

that when .a1 partial` vacuumA is created at this pointsthe atmosphere pressure creates anl additional means of overcoming the spring resistance means and lcloses'the valve to the predetermined `set speedfof 40 M. P. H., thereby defeating the yl-; attempt to Lov'erspeed, on the' part, of the operator.

or manipulator ofthe throttle-valve.` l

` -The present invention` relatesj'to an improvement in, the combination of` a governor and throttle valve whereby cheatingis'notpossible. 20

manual control'ofthe fuel feed and means asso- 30` ciated therewith whereby automatic means will bein control at all times whenthe manual means are' not control.A 'j p A .further objectV of the present invention is to I provideadevic'e -oi thetype describedwhereby 35 synchronousv movement of the throttle*- and governorlvalves is'g'obtained for the purpose of eliminating cheating. and preventing hunting or surging under 'part throttle. l' .Afurthervobjct ofthe vinve'mion is toprovide 40 an improved Vcons'truction including fa' throttle valve and"`a governor valve whereby the governor of being opened more than the throttle valve. n 45 Other Iobjects and advantages will be more apparentl vvfrom the `following description wherein reference is had to the accompanying three sheets Fig.' lf-is a I front elevational view of vmy im# proved unit disposed between .the carbureter and the'intake manifold of an engine, with a cover' ofthe mechanism-chamberv in section to more clearly show'the parts therein;

Fiaz is.l a par; View' pf my improved unit with 55 I is.

a portion of the housing broken into section to more clearly show other parts;

Fig. 3 is a front elevational view similar to Fig. 1 with both the governor valve and the throttle valve shown in a closed position;

Fig. 4 is a vertical sectional view of the same taken generally on the lines 4--4 of Fig. 3;

Fig. 5 is a vertical sectional view through the housing and conduit taken generally on the lines 5-5 of Fig. e;

Fig. 6 is a fragmentary plan sectional view taken generally on the line 6-6 of Fig. 4, and

Fig. '7 is a fragmentary plan View taken generally on the line 'l-l of Fig. 4.

In the embodiment of the invention in which I have chosen to illustrate the same, I have shown the lower flange lil of a carbureter, and a housing i2 directly therebeneath and positioned be- Y tween the oarbureter l) and the intake manifold I4.

The housing i2 is provided lwith a round conduit I6 adjacent its upper end which terminates in a square conduit 8 adjacent its lower end. A manually operableV valve 26 is provided in the conduit it positioned "upon a shaft '22 which extends thrcugh the housing l2 in both directions. 'Ih'e valve shaft 22 may be journalled in suitable ball bearing mountings 2li and 26 in appropriate bosses 26 and 3G formed on the housing l2. In orde-nto prevent' air from entering the conduit from the exterior of the housing, I provide the comparatively Athin'washers 32 adjacent the openings .36 and 35 in the housing l2. A pair of coiled spring members 38 and 40 serve to position the washer 32 around the shaft 22 and against the wall Yof the housing, thereby permitting practically no atmospheric air to enter the conduit i6 from 'this source. The shaft 22 may be provided at its right end (Fig. 4) with a lever 42 which may be connected by the usual linkage to either ahand operated handle or Va toot throttle ofthe usual type found `in automobiles. The opposite end of shaft 22 has an arm ll'secured thereto by means oi" a screw member i6 The arm 44 carries a roller i6 at its lower end which'is mounted for rotary movement upon a stud 56.

"Ihe governor valve 52 which 'is of the offset type, is positioned adjacent one of the side walls of the conduit i8 vand is vmounted upon a shaft 5t, being secured thereto by suitable screw vmembers 56. The shaft 5 may be journalled in suitable -ball Abearing members 56 and 58 mounted in bosses til and 62 on the housing I2. This shaft mayv also be provided with the thin washer 32 and spring member 33 forpreventing atmospheric air entering through the vopening 63 in the housing l2. The Vleft end of shaft (Fig. 4) may carry an arm Sil rigidly lsecured thereto and adapted to extend upwardly-therefrom. The arm tt has va cam face 6ta to permit the desired tension when the` valves are practically closed.V The governor valve shaft 54 may also carry an arm t6, rigidlysecuredthereto and provided at its extended end with a roller 68. The roller 68 is adapted to engage a cantilever spring member 'l whichhas its opposite end secured in a `pivotally mounted block member l2. The block member 'l2 is adapted to be rotated about its pivot by means of a lug member 'M carried by a screwthreaded stud Y6. The stud 'i6 may be connected with a lock member 'i8 which is capable of manipulation by a key to move the lug lli back and forth upon the screw 'li to adjust the tension upon the cantilever spring member 1li. This construction maybe generally similar to that shown and described in the patent to Addison C. Hoof, No. 1,966,722.

The housing l2 may be provided with a vertical wall 80 provided with a peripheral flange 62 to provide a seat for a sheet metal cover member 84. The cover member 84 may be held in position by suitable screw members 86 at various points as desired.

The operation of my improved device is as follows: Whenever it is desired to manually control the flow of fuel to the internal combustion engine, the lever t2 attached to the carburetor valve is manipulated and the speed of the vehicle upon which the unit is applied is controlled by hand. It will be noted that as the throttle valve 20 is moved toa closed position that the roller 48 which bears against the arm 64 on the governor valve `shaft E@ rotates the sameand moves the gover- .nor valve toward closed position at exactly the same speed. In other words, at such a partially yclosed position of the throttle valve 2G the gover'nor valve '52 has been manually likewise moved toward closed position. Assuming now that the vehicle is being driven at a governed speed with the throttle valve wide open and the governor valve at a partially closed position, the arm 64 will have been moved away from the roller 43 by the suction on the governor valve 52. The governor valve will be at a partially closed position controlling the speed of the vehicle at the set speed. Any attempt to close the throttle valve to a more nearly closed position than the governor valve, will result in failuraas the roller 48 will strike the arm 64 and move the governor valve to a more nearly closed position if such an attempt is made. For this reason it can be seen that the manipulation of the throttle valve heretofore possible with its resultant cheating is effectively eliminated.

. While I have illustrated and described a speciiic embodiment of the invention, it will 'be apparent to those skilled in the art that changes and modifications ymaybe made in the exact details shown, and I do not wish to limit myself in any particular; rather what I desireto secure andr protectby Letters Patent of the United States is:

l. In apparatus of theclass described, the combination with a housing having a passageway therethrough, a manually controllable valve in said passageway, a shaft connected thereto, a suction controlled valve in said passageway below said first named valve, a shaft connected thereto, and means co-operating between said valves for `moving said 'suction controlled valve toward a closed position as said manually controlled valve is closed, said means including an arm on said rst valve shaft, a roller at the end of saidarm and an arm on said second valve shaft engaging said roller and moved thereby.

2. In apparatus of theclass described, the combination with a housing having a passageway therethrough, a manually controllable valve in said passageway, a shaft connected thereto, va suction controlled valve in said passageway below said first named valve, a shaft connected thereto, means co-operating'between said valves `for moving said suction controlled valve toward a closed position as said 'manually controlled valve is closed, said means including an arm on said irst valve shaft, a roller at the end of said arm, an arm on said second valve shaft engaging said roller and moved thereby to a closed position, and spring means for urging said second valve to open position.

3. In apparatus of the class described,'the com-A bination with a housing having a passagewayV binaton with a housing having a passageway therethrough, a manually controllable valve in said passageway, a suction controlled Valve in said passageway below said iii-st named valve, and means connectedy between said valves for moving said suction controlled valve toward a closed position as said manually controlled valve is closed, said means including cooperating arms on both of said valves, a roller mounted on the end of one of said arms, and a cam surface formed on the end of said arms for engagement with the roller whereby' one of lthe valves will `be moved unequally to the movement of the other valve.

4. In apparatus of the class described, the comv bination with a housing having a passageway therethrough, a manually controllable Valve in said passageway, a shaft connected thereto, a suction controlled valve in said passageway below said first named valve, a shaft connected thereto,

and means cooperating between said valves for moving said suction controlled valve toward a closed position as said manually controlled valve is closed, said means including an` arm on said first valve shaft, a roller at the end of said arm, and an arm on said second Valve shaft engaging said roller and moved therebythe arm on said second valve shaft having a cam surface whereby said second valve is moved a diierent distance than said rst valve.

5, In apparatus of the class described, the comtherethrough, a manually controllable valve in said passageway, a shaft connected thereto, a suction controlled valve in'A said passageway beyond said rst named valve, a shaft connected thereto, and means co-operating between said valves for moving said suction controlled valve toward a closed position as said manually controlled valve isl closed, said means including an yarm operatively'connected to one shaft, a roller on said arm, and a second arm operatively connected with thel other` shaft and engageableby the roller;

6. In apparatusof the class described, the combination with a housing having a passageway therethrough, a manually controllable valve in said passageway, a suction controlled valve in said passageway below said rst named valve, and means connected between said valves for moving said suction controlled valve toward a closed position as said manually controlled valve is closed, saidmeans including cooperating arms operatively connected with both of said valves, one of said arms having a contact means adjacentl the end thereof, and a cam surface formed adjacent the end of the other of said arms for engagement by the rst contact means whereby one of the valves will be moved unequally with the movement of the other valve.

' ADDISON C. HOOF;

CERTIFICATE OE CORRECTION.

Patent No. 2,202,1I25. May 28, I9LIO.

ADDISON C. EOOE.

It is hereby certified that error appears in the printed specification 'of the above nwnbered patent requiring correction as follows: Page 5, first column, line ll, claim 5, before "said" insert --the other of;'and that the said Letters Patent should be read with this correction therein that the same may conform Vto the record of the case in the Patent Office.

Signed and sealed this 2nd-day of July, A. D. l9lLO. y

A Henry Van Arsdale,

(Seal) Acting Commissioner 'of Patents. 

